Pulses & Energy
Nonlinear Phase (SPM B-integral)
Estimate self-phase modulation (B-integral) of ultrashort or high-power light in fiber.
φ_NL = (2π/λ) · n₂ · I · L_eff
Fill the inputs from a real part
Every number is read from that part's datasheet entry: peak power and pulse energy as rated, pulse width at the part's rated maximum.
Solve for
Inputs
Result
Live diagram
Drawn from the values above, redrawn as you type - the same physical schematic the mini-program shows.